Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Describe inflammation and atherosclerosis, Describe Inflammation and Athero...

Describe Inflammation and Atherosclerosis  ? It has recently been stated that atherosclerosis is clearly an inflammatory disease and does not result simply from the accumulatio

Amoeba, Place a slide of Amoeba (common species is A. proteus) under tlie l...

Place a slide of Amoeba (common species is A. proteus) under tlie lnicroscope and focus it under low power (5x x 5x), and observe it carefully. Amoeba looks like an irregular colou

What are their respective modes of transmission, What are some human diseas...

What are some human diseases caused by bacteria and what are their respective modes of transmission? The major human bacterial infections transmitted by respiratory secretions

Empirical validity of test procedures, Empirical validity of test procedure...

Empirical validity of test procedures Reitan's great concern has always been with the empirical validity of test procedures. Such validity can only be established by the collec

How does refrigeration help to stop food from going bad, How does refrigera...

How does refrigeration help to stop food from going bad?   Western diets are often unhealthy due to they have too much sugar and fat, and not sufficient fibre.

Define about the paracellular route - calcium, Define about the Paracellula...

Define about the Paracellular Route - Calcium? It involves passive Ca transport through the tight junctions between mucosal cells. The salient features include: It is in

Histogenesis and organogenesis, Histogenesis and Organogenesis After t...

Histogenesis and Organogenesis After the octant stage numerous cell divisions occur in various planes. The proembryo become globular or bulb-shaped. As a general rule, some ta

Explain about anabolism, Q. Explain about Anabolism? Anabolism is a pro...

Q. Explain about Anabolism? Anabolism is a process of synthesis or making of larger or complex molecules from smaller molecules. The molecules are of different kinds like hormo

Define the term underweight, Define the term Underweight? Just as overw...

Define the term Underweight? Just as overweight is the result of a positive energy balance irrespective of the etiology, underweight results when the energy balance is negative

Limitations of doppler echocardiograph, Though  it has bees suggested that ...

Though  it has bees suggested that Doppler echocardiography may be useful for non-invasive determinations of  stroke volume and cardiac output, it  should be recognized that th4re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd